ICTM Collaborative R&D 2021

Ni-Blisk Manufacturing – Achieving Small Tolerances

To what extend can tolerances be reduced in Blisk manufacturing?


Challenge and Motivation

  • The by pass ratio of the next aero engine generations will increase.
  • The core engine will become smaller compared to current engine programs.
  • Challenges for all machining processes result from the new design specially regarding the suitable tolerances.


  • To examine the manufacturability of Blisks with smaller blades and reduced gaps in the framework.
  • Identification of scaling effects for the different manufacturing processes.